65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
From 69ca2dbfbb7c19d8b42bb361a06f9a669cf700c1 Mon Sep 17 00:00:00 2001
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Message-Id: <69ca2dbfbb7c19d8b42bb361a06f9a669cf700c1.1601675152.git.zanussi@kernel.org>
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In-Reply-To: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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References: <5b5a156f9808b1acf1205606e03da117214549ea.1601675151.git.zanussi@kernel.org>
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Wed, 13 Sep 2017 12:32:34 +0200
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Subject: [PATCH 171/333] fs/dcache: bring back explicit INIT_HLIST_BL_HEAD
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init
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.148-rt64.tar.xz
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Commit 3d375d78593c ("mm: update callers to use HASH_ZERO flag") removed
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INIT_HLIST_BL_HEAD and uses the ZERO flag instead for the init. However
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on RT we have also a spinlock which needs an init call so we can't use
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that.
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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fs/dcache.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/fs/dcache.c b/fs/dcache.c
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index 6e0022326afe..10225a9135fb 100644
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--- a/fs/dcache.c
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+++ b/fs/dcache.c
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@@ -3060,6 +3060,8 @@ __setup("dhash_entries=", set_dhash_entries);
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static void __init dcache_init_early(void)
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{
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+ unsigned int loop;
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+
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/* If hashes are distributed across NUMA nodes, defer
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* hash allocation until vmalloc space is available.
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*/
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@@ -3076,11 +3078,16 @@ static void __init dcache_init_early(void)
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NULL,
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0,
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0);
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+
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+ for (loop = 0; loop < (1U << d_hash_shift); loop++)
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+ INIT_HLIST_BL_HEAD(dentry_hashtable + loop);
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+
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d_hash_shift = 32 - d_hash_shift;
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}
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static void __init dcache_init(void)
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{
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+ unsigned int loop;
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/*
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* A constructor could be added for stable state like the lists,
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* but it is probably not worth it because of the cache nature
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@@ -3104,6 +3111,10 @@ static void __init dcache_init(void)
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NULL,
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0,
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0);
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+
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+ for (loop = 0; loop < (1U << d_hash_shift); loop++)
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+ INIT_HLIST_BL_HEAD(dentry_hashtable + loop);
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+
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d_hash_shift = 32 - d_hash_shift;
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}
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--
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2.17.1
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